(a) In addition to the methods of termination prescribed by sections four hundred eleven through four hundred fourteen, article four of this chapter, a trust terminates to the extent the trust is revoked or expires pursuant to its terms, no purpose of the trust remains to be achieved, or the purposes of the trust have become unlawful, contrary to public policy, or impossible to achieve.
(b) A proceeding to approve or disapprove a proposed modification or termination under sections four hundred eleven through four hundred sixteen of this article, or trust combination or division under section four hundred seventeen of this article, may be commenced by a trustee or beneficiary, and a proceeding to approve or disapprove a proposed modification or termination under section four hundred eleven of this article may be commenced by the grantor. The grantor of a charitable trust may maintain a proceeding to modify the trust under section four hundred thirteen of this article.